NORTHWEST PIPE CO

Ticker: NWPX CUSIP: 667746101 Class: Common Stock

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

Note: Option positions (PUT/CALL) are excluded.

Q2 2020

Shares 17,300 Value ($000) $434 Avg Close $23.80 Range $19.33 - $27.57

Q1 2020

Shares 27,500 Value ($000) $612 Avg Close $30.50 Range $18.52 - $36.70

Q4 2019

Shares 26,800 Value ($000) $893 Avg Close $31.55 Range $25.02 - $34.80

Q3 2019

Shares 26,800 Value ($000) $754 Avg Close $25.44 Range $18.04 - $28.93

Q2 2019

Shares 22,800 Value ($000) $588 Avg Close $24.80 Range $22.08 - $26.48

Q1 2019

Shares 22,800 Value ($000) $547 Avg Close $23.71 Range $21.02 - $25.98

Q4 2018

Shares 27,300 Value ($000) $636 Avg Close $21.28 Range $16.52 - $25.05

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2020	17,300	$434	$23.80	$19.33 - $27.57
Q1 2020	27,500	$612	$30.50	$18.52 - $36.70
Q4 2019	26,800	$893	$31.55	$25.02 - $34.80
Q3 2019	26,800	$754	$25.44	$18.04 - $28.93
Q2 2019	22,800	$588	$24.80	$22.08 - $26.48
Q1 2019	22,800	$547	$23.71	$21.02 - $25.98
Q4 2018	27,300	$636	$21.28	$16.52 - $25.05